Am I normal?!

Chloe • Willow 26/07/18 Baby 2 due 16/09/2020
I've been on my period now since July. It alternates between heavy and like a sticky brown (tmi sorry!!) 
I came off the depo injection in October and me and SO have been trying for a baby!
I have been to the doctor and she has been telling me to take regular preg tests ( all negative) as I've got some serious bloating going on which gives me a pregnant look!
Has any one experienced this before?
 I'm 24 years old and starting to worry that I'm not fertile anymore!